class DocumentsUploader < CarrierWave::Uploader::Base

    # Include RMagick or MiniMagick support:
    include CarrierWave::RMagick
    # include CarrierWave::MiniMagick

    # Include the Sprockets helpers for Rails 3.1+ asset pipeline compatibility:
    # include Sprockets::Helpers::RailsHelper
    # include Sprockets::Helpers::IsolatedHelper

    # Choose what kind of storage to use for this uploader:
    storage :file
    # storage :fog

    # Override the directory where uploaded files will be stored.
    # This is a sensible default for uploaders that are meant to be mounted:
    def store_dir
      #"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
      "uploads/cartasur/documents/#{model.user.login}"
    end

    # Provide a default URL as a default if there hasn't been a file uploaded:
    def default_url
      #   # For Rails 3.1+ asset pipeline compatibility:
      #   # asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
      #
      #"/images/fallback/" + [version_name, "default.png"].compact.join('_')
      "uploads/cartasur/documents/"+[version_name, "default_document.png"].compact.join('_')
    end

    # Process files as they are uploaded:
    # process :scale => [200, 300]
    #
    #def scale(width, height)
    #  resize_to_limit(width, height)
    #end

    # Create different versions of your uploaded files:
    #version :thumb do
    #  process :scale => [100, 100]
    #end

    #limit file size
    # @param [Object] the file uploaded
    def pre_limit file
      if file && file.size > 15.megabytes
        raise Exception.new("file too large")
      end
      true
    end

    # Add a white list of extensions which are allowed to be uploaded.
    # For images you might use something like this:
    def extension_white_list
      %w(jpg jpeg gif png tiff bmp doc docx pdf xls xlsx ppt pptx keynote txt rtf xml)
    end

    # Override the filename of the uploaded files:
    # Avoid using model.id or version_name here, see uploader/store.rb for details.
    # def filename
    #   "something.jpg" if original_filename
    # end

end